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Updated: June 17, 2025
As for Close, taking his cue from his attorney, he scornfully added: "I came to find out some new evidence against the wretch who wrecked the beauty of my wife. All I've got is a tiresome lecture on X-rays and radium. I suppose what you say is true. Well, it only bears out what I thought before. Gregory treated my wife at home, after he saw the damage his office treatments had done.
There were genuine tears in her eyes as she said it. "I thought you would be willing to aid us," pursued Kennedy sympathetically. "Now, for one thing, I want to be perfectly sure just how much radium the Corporation owns, or rather owned before the first robbery." "The books will show it," she said simply. "They will?" commented Kennedy.
The spectrum of helium never appears at first in the gas proceeding from pure bromide of radium; but it shows itself, on the other hand, very distinctly, after the radioactive transformations undergone by the salt. All these strange phenomena suggest bold hypotheses, but to construct them with any solidity they must be supported by the greatest possible number of facts.
He had gone over everything in silence, and now at last we had returned to the safe. "Yes," he repeated slowly, as if confirming his original impression, "such an amount of radium as was stolen wouldn't occasion immediate discomfort to the thief, I suppose, but later no infernal machine could be more dangerous to him."
On his tombstone he is described as "The Father of Chemistry and the Uncle of the Earl of Cork", and, indeed, in his Skyptical Chimist , he assailed, and for the time overthrew, the idea of the alchemists that there was a materia prima, asserting as he did that theory of chemical "elements" which held good until the discoveries in connection with radium led to a modification in chemical teaching.
The latest theory is that the alpha particle is in fact an atom of helium, and that the final transformation product of radium and the other radioactive substances is lead. Cf. Rutherford, op. cit. passim.
There is an almost embarrassing amount of radium in the earth's crust, so far as we have examined it; a quantity, that is to say, so great that if the same proportion were maintained at deeper levels as at those which we can investigate, the earth would have to be far hotter than it is. Similar reasoning applies to the sun.
Immediately upon the question coming into my mind, however, I became aware that the ceiling was coated with a composition, one of the component parts of which was radium in a highly developed state. Its action upon the other elements that composed this substance resulted in a perpetual light without heat, which was equal in every way to daylight.
In decomposing it gives off first a helium atom, weight 4; and after this action has been repeated three times the substance left is radium, atomic weight about 226.4. Thus radium is simply uranium after it has lost three helium atoms. The final stage in this process of disintegration is the ordinary element lead, in which condition the atoms seem to have reached relative stability.
It is a property of some thirty substances of course, the number may be increased a few of which are found widely distributed in rocks and waters, but none of which is found anywhere except in extraordinarily minute quantity. Radium is the most abundant of these substances; but only a very few grains of radium chloride can be obtained from a couple of tons of pitchblende.
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